EP 0560098 A3 19940216 -
Publication
Application
Priority
DE 4208090 A 19920313
Abstract (en)
[origin: EP0560098A2] 2.1 Multidimensional, trellis-coded QAM signals are intended to be generated which enable error detection and correction and furthermore carrier acquisition which is immune to interference. 2.2 Each QAM signal symbol is composed of a plurality of symbols, each of which is obtained from a different symbol alphabet, one of the symbol alphabets, represented in the complex plane, having a square form and the K (K = 1, 2, 3...) further symbol alphabets having an approximately circular form. <IMAGE>
IPC 1-7
IPC 8 full level
H04L 27/34 (2006.01)
CPC (source: EP)
H04L 27/3427 (2013.01); H04L 27/3455 (2013.01)
Citation (search report)
- [PX] EP 0490552 A2 19920617 - AMERICAN TELEPHONE & TELEGRAPH [US]
- [Y] EP 0346036 A2 19891213 - NORTHERN TELECOM LTD [CA]
- [Y] US 4941154 A 19900710 - WEI LEE-FANG [US]
- [A] EP 0209902 A2 19870128 - NEC CORP [JP]
- [A] DE 3629206 A1 19880303 - KABELMETAL ELECTRO GMBH [DE]
- [A] IEEE International Conference on Communications ICC '88, Philadelphia, US, 12.-15.06.1988, vol. 1, pages 80-84, IEEE, New York, US;
Designated contracting state (EPC)
FR IT NL SE
DOCDB simple family (publication)
DE 4208090 C1 19930513; EP 0560098 A2 19930915; EP 0560098 A3 19940216
DOCDB simple family (application)
DE 4208090 A 19920313; EP 93102588 A 19930219